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  1. <?php
  2.  
  3. function totalEmployees($levels, $employees_per_level=7) {
  4.     $total = 0;	
  5.     while ($levels>=0) {
  6.         $total += pow($employees_per_level, $levels);
  7.         $levels--;
  8.     }
  9.     return $total;
  10. }
  11.  
  12. $levels = 2;
  13. echo 'Total employees count: '.totalEmployees($levels);
  14.  
  15. ?>
Success #stdin #stdout 0.02s 25708KB
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Standard input is empty
stdout
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Total employees count: 57
https://ideone.com/r09nfJ
language:
PHP (php 7.3.5)
created:
1 day ago
visibility:
public

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